/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.engine.impl.cmd;

import org.activiti.engine.ActivitiIllegalArgumentException;
import org.activiti.engine.identity.User;
import org.activiti.engine.impl.interceptor.Command;
import org.activiti.engine.impl.interceptor.CommandContext;

import java.io.Serializable;


/**
 * @author Joram Barrez
 */
public class SaveUserCmd implements Command<Void>, Serializable {

    private static final long serialVersionUID = 1L;
    protected User user;

    public SaveUserCmd(User user) {
        this.user = user;
    }

    public Void execute(CommandContext commandContext) {
        if (user == null) {
            throw new ActivitiIllegalArgumentException("user is null");
        }
        if (commandContext.getUserIdentityManager().isNewUser(user)) {
            commandContext
                    .getUserIdentityManager()
                    .insertUser(user);
        } else {
            commandContext
                    .getUserIdentityManager()
                    .updateUser(user);
        }

        return null;
    }
}
